After you and Castiel had met through the Winchesters you guys would go on hunts with them and with only each other and in that time you guys had grown close. Becoming good friends, maybe more. And right now you guys are on a sort of date at the beach.

You and Castiel are walking on the beach finding shells and rocks. Toes in the sand and shoes in one hand and your findings in the other. Castiel comes up to you with some (Color of your eyes) rocks and he smiles softly "These remind me of your eyes"